Preheat your oven to 180 C / 350 F. Line a cookie sheet with parchment paper or grease well.

In a bowl whisk or sift together the flour, cocoa , coffee , soda and salt. Keep aside.

In another bowl, using an electric mixer or wooden spoon, beat together the butter and sugar until light and fluffy.

Add the egg and beat well until incorporated.

Add the dry ingredient mixture and beat until dough forms.

Sift the icing sugar into a plate or bowl.

Shape tablespoonfuls of the dough into balls , roll in the icing sugar and place on your prepared cookie sheet.

Repeat with all the dough. The cookies will spread a lot so keep plenty of space between the cookie dough balls and bake in batches.

Bake for 180 C / 350 F for 12 to 14 minutes . Cool on pan for 5 minutes .

Transfer to wire rack and cool completely